Method of refining cacao-oil



UNITED STATES; PATE i Eg JAMES N. 'IU'ITLE, OF LYNN, AND JOSEPH PHELAN, OF MEDFOBD, MASSAGHU- SETI'S. ASSIGNORS TO KALMUS, CQMSTOCK Ea WESTCOTT, INQ, OF CKUSETTS, A CORPORATION.OF MASSACHUSETTS proved method ofrefining cacao oil.

In extracting chocolate from the cacao. bean after the roasting, crushing and filtering operations, the oil which runs off from the filter press, known as cacao oil or cacao butter, consists of a mixture of glycerids of stearic, palmitic and arnchidic acids containing chocolate in suspension and certain volatile substances which give it its characteristic odor and taste. The chocolate in suspension is removed by filtering through paper or cloth in the usual manner, keeping the temperature above the melting point. The removal, however, of the volatile substances is a matter of difiiculty, as it is necessary that the constitution of the oil remain unchanged. One of the uses to which the refined oil is especially adapted is the manufacture of margarin.

The object of this invention is to produce a method of refining cacao oil, and particularly a method by which the odorous and gustable ingredients of the oil may be removed without injury to the constitution-0f the oil. To this end the invention consists. in the method. of refining cacao oil hereinafter described and particularly definedin the claims. lhe cacao oil, as it. comes from the chocolate manufacturers is first filtered in the usual manner to remove the .solid chocolate constituent by filtering it Specification o Letters Patent.

. METHOD OF REFINING CACAO-OIL.

Patented Aug.

1919. Serial no. 311,056.

these substancesare'reinovedby a treatmei'it with alkalized fullers earth.- It is well known that objectionable coloring matter may be removed from oils in I treatment with fullers earth.

cacao oil maybe removed by treatment with BOSTON. MASSA fgeneral, by t has been found that while the objectionable odors in 386.com W and the subsequent treatment of cacao oil i with the alkalized tullers earth, entirely're inove this objectionable earthy taste and leave the cacao oil in an odorless and tasteless condition suitable for use as a comestii' The preferred method 'of procedure of alkalr/nng the fullcrs earth is described asble.

The fullers earth used for treatment of the oil is prepared by shaking fullersl earth in a powdery condition with, lime water 1 then filtering through cloth or paper, wash i (calcium hydroxid solution U., P:) and iug repeatedly with distilled water to"re move any free lime and drying in}: but closet and powder-mg; The f11llers earth' in this specification will be referred to as alkalized ullcrs earth defining the invention.

The oil is escribed as follows :To parts of cacaoo'il, 5 parts of alkalized fuller s for convenience in referred form of refiningthe cacao' earth are added, and the mixture is-violen'tly agitated for some hours, and then the fullers earth is removed byfiltrati'on through-cloth f or paper in a convenient manner, preferably by the use of a filter press; Ihe-alkalized- ,iullers earth removes from'the oil-all gustable and odorous volatile substances, and as well, a considerable portion-of the eolor .ing matter; so that. the refined oilis' a clear 'or odor, and of a pale yellow'color. A va-f riution or modification .of the process de-.-

scribed consistsin adding to the IOU-parts of euczm oil, 5 parts by weight of'untreatetl mixture, and then removing the-:iullers.

OR IN 260/427 (acuo oil deprived of any conspicuous taste 1:9 f

" earth and calciumhydroxid by filti'ation through cloth or paper; but preferably by the-'use of a filterpress. Hfiirin thus described the inventiomivhat consists in adding to 100 parts of oil 5 parts 7 of untreated fullers ea-rth and part of an alkaline material, agitatin and settli'ngthe mixture and filtering ofi" 1; 1e 0i1. 3. The methbd of refiningcacao'dil which ,1; .The method refining caca o oil ivhi ch consists in agitating the oil with alkalized consists in adding to 100 pa'i'ts of oil 5 pans ifullers earh, and filteriiig off the arlkalized of alkzilized fullers earth, and subjecting'the mixture to agitation, ahd filtering'the a1ka 10 l ized fliliGISi/fllfll:fldln the mixture. 2. .The method of refining cacao oil which fullers earth from the mixture.

' JAMES N. TUTTLE,

JOSEPH W. PHELAN. 

